Over 3.5 million people visit the park each year.[2] Despite the park's great size, most people spend time in Yosemite Valley, one of the most beautiful places in the park. Almost 95 percent of the park is wilderness. Yosemite has many waterfalls. The most famous of these is the world-famous Yosemite Falls, which at 2,425 feet (739 m) tall, is one of the tallest waterfalls in the world.[3]

In the northern area of the park lies the Hetch Hetchy Reservoir, a debated dam project. The reservoir floods. Many people supporting environmentalism are trying to get the dam removed.[4]